chapter 3: Bio-10

Question 1

What is a unicellular organism?

Answer 1

a single cell that has a short life spam and dies easy

Question 2

What is a multicellular organism?

Answer 2

multiple cell performing specific roles and does not die if one cell dies

Question 3

what is the levels of organization?

Answer 3

organelles, cells, tissues, organs, organ systems, organisms

Question 4

what are shoots?

Answer 4

they do photosynthisis in plants

Question 5

what are roots?

Answer 5

everything underground that absorb water and minerals from soil

Question 6

what is the cuticle?

Answer 6

a waxy covering to protect plant from water loss and insect attack

Question 7

what is the dermis?

Answer 7

a thick skin like part of the plant to protect it

Question 8

what is the stomata?

Answer 8

in lower dermis. They allow gas to move in and out of the plant

Question 9

what are the guard cells?

Answer 9

control weather or not stomata are open or closed

Question 10

what are the ground tissue?

Answer 10

body of the plant between dermis layers

Question 11

what are the palisade tissue?

Answer 11

near the top of the leave and tightly packed together to maximize photosynthesis

Question 12

what is the spongy mesophyll?

Answer 12

near the bottm and are very spread out to allow gas exchange to occur?

Question 13

what is the vascular issue?

Answer 13

veins that transport minerals and nutrients through plant. contains xylem and phloem.

Question 14

what is the xylem?

Answer 14

xylem moves water and nutrients out of plant

Question 15

what is the phloem?

Answer 15

transports glucose into plant

Question 16

where is glucose made?

Answer 16

in the chloroplast in the palisade tissues

Question 17

what is the formula for photosynthesis?

Answer 17

(6)H2O + (6)CO2 + energy —–> C2H12O6 + (6)O2

Question 18

where does photosynthesis happen?

Answer 18

in the chloroplast in the palisade tissue where it traps red and blue light and reflects green

Question 19

when does photosynthesis happen?

Answer 19

only in plants during the day

Question 20

what is the formula for cellular respiration?

Answer 20

C2H12O6 + (6)O2 —–> (6)H2O + (6)CO2 + energy

Question 21

where does cellular respiration happen?

Answer 21

in the mitochondria and all the time in everything

Question 22

what are lenticels?

Answer 22

there a replacement for stomata in woody plants

Question 23

what are stomata and what do they do?

Answer 23

they are openings at the bottom of the leaf and they are controlled by the guard cells. Allow for gas and water to come in/out.

Question 24

What is turgor?

Answer 24

its the amount of water pressure in a plant

Question 25

What does the guard cell do to the stomata?

Answer 25

it opens and closes it to allow for gas exchange and prevent water loss

Question 26

why is water polar?

Answer 26

because it has a positive and a negative end

Question 27

what is cohesion?

Answer 27

it is when a positive and a negative end of a water molecule are attracted to each other

Question 28

what is adhesion?

Answer 28

this is when water molecules start to stick to other substances such as the xylem

Question 29

what is transpiration pull?

Answer 29

it the evaporation from leaves. it creates a vacuum and pulls water up from the roots and is an example of active transport

Question 30

what is stimuli?

Answer 30

a change in the environment or trigger

Question 31

what is tropism?

Answer 31

a response to stimuli

Question 32

what is phototropism?

Answer 32

the plants response to sunlight

Question 33

what is positive phototropism?

Answer 33

grows toward the sun Ex. sunflower

Question 34

what is negative phototropism?

Answer 34

grows away from sun Ex. roots

Question 35

what is gravitropism?

Answer 35

the plants response to gravity

Question 36

what is positive gravitropism?

Answer 36

growns down with gravity Ex roots

Question 37

what is negative gravitropism?

Answer 37

grown up against gravity Ex. leaves

Question 38

what is auxin?

Answer 38

the chemical that causes cells to stretch out towards the sun and curve on the opposite side.

Question 39

how do stomata numbers change due to environment?

Answer 39

few in dry places to keep in water lots in wet places to let out water

Question 40

where does the oxygen produced go?

Answer 40

some stay in the plant and travels to the mitochondria for cellular respiration and the rest leaves the plant for us to breath.